Work, Energy and Power questions
712 published questions with worked solutions.
- A can filled with water is revolved in a vertical circle of radius 'r' and water just does not fall down. The time period of...
- Atul decides to use his bath tub water to generate electric power to run a 60 watt bulb. The bath tub is located at a height of...
- When the earth revolves round the sun in an elliptical orbit, its kinetic energy is
- In a gravitational field, work done in moving a mass from one point to another
- A satellite is revolving around the earth in a circular orbit whose radius is R work done by gravitational force in one...
- When a satellite moves around the earth (consider elliptical orbits),
- An asteroid of mass m is approaching earth, initially at a distance of 10R_e with speed v_i. It hits the earth with a speed v_f...
- A gardener pushes a lawn roller through a distance 20 m. If he applied a force of 20 kg-wt in a direction inclined at 60^ to the...
- A force (3 i + 4 j ) N acts on a body and displaces it by (3 i + 4 j ) m. The work done by the force is
- Force acting on a particle is (2 i + 3 j ) N. Work done by this force is zero, when a particle is moved on the line 3y + kx = 5....
- If the force acting on a body is inversely proportional to its speed, the kinetic energy of the body is
- An object is displaced from point A(2 m, 3 m, 4 m) to a point B(1 m, 2 m, 3 m) under a constant force F = (2 i + 3 j + 4 k ) N,...
- A force F = (10 + 0.5x) acts on a particle in the x-direction. What would be the work done by this force during a displacement...
- A force F = -5 i - 7 j + 3 k acting on a particle causes a displacement s = 3 i - 2 j + a k in its own direction. If the work...
- A force F=-5 i-7 j+3 k acting on a particle causes a displacement s=3 i-2 j+a k in its own direction. If the work done is 14 J,...
- A force F=3 i+6 j+2 k acting on a particle causes displacement S=-4 i+x j+3 k in the direction of F. If the work done is 12 J,...
- The kinetic energy acquired by a body of mass 'M' in travelling a certain distance 'd', starting from rest, under the action of...
- A body of mass 'm' begins to move under the action of time dependent force F=(t i+2t^2 j) N where i and j are unit vectors along...
- A vehicle accelerates from speed 'V' to '2V'. Work done during this is [MHT-CET 2020]
- Two masses of 1 gram and 4 gram are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is [MHT-CET...
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